For example, adding a modifier (like Ctrl+DownArrow) will make that unintuitive to the users and defeat its purpose. I understand that people want the Excel behavior, yet mixing that with the Web will cause clashes.

This is a very complex matter and this item is to track its progress. Please do Follow this page for updates, as these are improvements that we will probably make, it is mostly a matter of time - Blazor as technology is still very young, and so a component suite built natively from the ground up on it (like we do) will have some catching up to do with JS components that have been around for years and years. Personally, I also think that InCell editing should allow for faster data input, and adding similar keyboard 'gestures' is the way to do this. I will definitely make sure that the idea for the arrow keys becomes part of the review, through, there might be some way to make it work, maybe behind a flag, at least, so you can choose.

I think that what I see in the videos will become possible with Tab, Shift+Tab and Enter keys, even if not the arrow keys. It helps us a lot in seeing what people want and need, so we can see what we can do to both make it usable in a common case, while still solving the particular problem.

Weslly colorpicker